| Grenade to Marco de Canavezes | 513.00 mi (825.59 km) |
| Grenade to Marinha Grande | 595.21 mi (957.90 km) |
| Grenade to Massama | 648.29 mi (1,043.32 km) |
| Grenade to Matosinhos | 539.30 mi (867.93 km) |
| Grenade to Mealhada | 551.31 mi (887.25 km) |
| Grenade to Melgaco | 496.53 mi (799.09 km) |
| Grenade to Melres | 528.15 mi (849.98 km) |
| Grenade to Mira | 562.87 mi (905.85 km) |
| Grenade to Miranda do Corvo | 555.53 mi (894.03 km) |
| Grenade to Mirandela | 458.61 mi (738.05 km) |
| Grenade to Mogadouro | 440.88 mi (709.52 km) |
| Grenade to Moimenta da Beira | 493.51 mi (794.23 km) |
| Grenade to Moita | 639.98 mi (1,029.94 km) |
| Grenade to Moncao | 507.87 mi (817.34 km) |
| Grenade to Montalegre | 479.56 mi (771.78 km) |
